It is unlawful for any person, either as principal, agent or employee, to drive, drag, propel or move, or cause to be moved upon any street, alley, thoroughfare or place with a surface improved or finished by oiling or otherwise within the City, any plow, harrow or cutting or scratching instrument or any heavy vehicle or machine liable to break the surface of, or do injury to the surface of the street, alley, thoroughfare or place, except in pursuance of a lawful contract to improve the street, alley, thoroughfare or place, or a permit therefor granted by the City Council at its option in case of urgent necessity. (Ord. 10, 2-28-1917)